Steel-cutting machine



R. E. COLTON.

STEEL CUTTING MACHINE. APPLICATION EILED AUGJZFISOH. RENEWEDMAR. 29.19!].

1,195,184. PatentedAug. 22,1916.

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STEEL CUTTING MACHINE.

APPLICATION FILED AUG.27, 190a. RENEWED MAR. 29. I91].

1,195,184. PatentedAug. 22,1916.

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llllq -fillllllllllllllll HHIIIIIIIII TIE-LE- naw/144 0 2 v PosfoECa/fwvROSTO ELLSWORTI-I COLTON, OF EASTI-IAMPTON, MASSACHUSETTS, ASSIGNOR TOWALTER SLACK, OF SPRINGFIELD, MASSACHUSETTS.

STEEL-CUTTING MACHINE.

Specification of Letters Patent.

Patented Aug. 22, 1191 Application filed August 27, 1908, Serial No.450,479. Renewed March 29, 1911. Serial No. 617,737.

To all whom it may concern:

Be it known that I, Ros'ro E. CoL'roN, a citizen of the United States,residing at Easthampton, in the county of Hampshire and State ofMassachusetts, have invented certain new and useful Improvements inSteel-Cutting Machines; and I do declare thefollowing to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in steel cutting machines.

The object of the invention is to provide means whereby the steel to becut is securely clamped onto the supporting table of the machine, andmeans whereby the table is moved to bring the steel into engagement withthe cutting wheel.

With this and other objects in view, the invention consists of certainnovel features of construction, combinations and arrangements of partsas will be described and particularly pointed out in the appendedclaims.

In the accompanying drawings, Figure 1 is a front elevation of a steelcutting machine, showing my invention applied there'- to; Fig. 2 is aside view of the same; Fig. 3 is a top plan,view;,Fig. 4 is a bottomplan view of the table, with the steel clamping device removed; Fig. '5is a vertical cross sec.- tional view of the table and the steelclamping device; Fig. 6 is a detail view of the clamp operating plate;Fig. 7 is a detail vertical sectional view through the gage clampingdevice, and a portion of the table; and Fig. 8 is a similar view of oneof the gage clamping washers.

Referring more particularly to the drawings, 1 denotes the cuttingmachine, which consists of a base, 2, on the upper end of which arebolted or otherwisefsecured bearing standards, 3, in. which is revolublymounted a disk-operating shaft, 4, on which, between the standards, 3,is arranged a drive pulley, 5, to receive a driving belt whereby theshaft is operated. On one end of the shaft, 4, is fixedly mounted acutting wheel, 6, which'may be ofanydesired construction,

and which may, if desired, be provided with a suitable casing, 7.

Pivotallymounted on suitable stud shafts, 8, on the opposite sides ofthe base, 2, ad acent to its lower end, are upwardly projectingtable-supporting arms, 9, the upper ends of which are bolted orotherwise secured to apertured cars, 10, formed on the lower side of awork supporting table, 12. Pivotally mounted on the front side of thebase, 2, adjacent to one side thereof, is a table-operat mg lever, 13,the lower end of which is loosely connected to the adjacent tablesupporting arm, 9, by means of a link, 14, said link being connected atone end to said arm, and adjustably connected at its other end to theoperating lever by a bolt 15, which is engaged with one of a series ofholes, 16 formed in said arm and lever.

On the table, 12, is arranged a central long tudinally disposed,upwardly projecting r1b,17, which is adapted to co-act with workclampingdevices whereby the steel or other metal to be cut is securely held inposition on the table while being severed by the cutting wheel, 6. Thework-clamping devices comprise a clamping-head, 18, having a verticalwork-engaging face or edge, 19, and provided on its lower edge with adepending guide lug, 20, and a retracting pin, 21. The clamping head,18, is slidably engaged with the upper side of the table over a slot,22, formed in the latter and through which projects the guide lug, 20,on the lower side of said head, as clearly shown in Fig. 5 of thedrawing. The head, 18, is provided with a vertical bolt hole or passage23 in which is arranged a fastening bolt, 24, the lower end of whichextends through one of a number of suitable apertures, 25, in aclamp-operating plate, 26, which is slidably mounted on the lower sideof the table, as shown. The apertures, 25, in the plate 26 are arrangedin connected pairs, the fastening bolt, 24, being engaged with one ofthe apertures of one pair while the retracting pin, 21, is engaged withthe corresponding aperture of another pair, thus providing means formoving and for securely fastening the head in its adjusted position. Theapertures 25 are arranged as shown in order to obtain a fine adjustmentwithout the liability of the parts slipping as with slots,

The head, 18, is adapted for engagement with a bar of steel or othermetal to be out, said bar being placed upon the table adjacent to oneside of the rib, 17, and is securely clamped into engagement with saidrib by means of the clamping head, 18. The head, 18, is drawn intoengagement with the bar of steel by means of the clamp operating plate26, said plate being actuated by means of a lever, 27, which is providedwith a cam operating head, 28, pivoted on the table by .means of a pivotbolt, 29 which passes through a slot, 30, in the table and through anaperture, 31, in the operating plate 26, and holds said lever in such aposition that when the lever is turned in the proper direction the camhead 28 will engage the adja cent side of the rib, 17 which action willmove the bolt, 29, and thereby the operating plate, 26, to cause thelatter to draw the clamping head, 18, into engagement with the bar ofsteel or other work, thus clamping the latter tightly against the rib,17, on the table. After the steel bar or other work has thus beenclamped in position on the table, the latter is moved by the lever, 13,and arms, 9, to bring the steel bar into engagcinent with the cuttingwheel, whereby a section of the bar is cut off. When the bar has thusbeen cut and it is desired to release the same for further adjustment,the cam lever 27 is operated to disengage the head 28 from the rib 17thus releasing the operating plate, after which said plate and theclamping head are retracted and the head disengaged from the bar ofsteel by means of a retracting spring, 32, one end of which is suitablysecured to the lower side of the table, while its opposite end isslightly curved and engages the lower projecting end of the retractingpin, 21, which projects downwardly from the clamping head, 18.

In order to provide for cutting off equal lengths of steel from thesteel bar, I provide a suitable gage, 33, said gage comprising alongitudinal rod, the outer end of which is bent at right-angles to forma stop, 34. The bar 33 is adjustably secured to the table by means ofgage-clamping disks or washers, 35, which are arranged on a clampingbolt, 36, which projects upwardly through an aperture in the table andis adapted to receive the disk or washers which are clamped intoengagement with the gage.

by means of a clamping nut, 37, which is screwed onto the reduced andthreaded upper end of the bolt. The bolt, 36, is provided with atransversely disposed passage, 38, while the clamping disk and washers35 have formed in their opposing faces transversely disposed grooves,39, which, when .the washers are brought together, form a passagethrough which and through the passage, 38, in the bolt, is inserted theinner end of the gage, 33. After the gage has been adjusted to theproper position for cutting off the desired lengths of steel, the nut,37,

vices are released and the bar moved along on the table until its endagain comes into engagement with the stop, :n, on the gage, thusproviding for the cutting off of equal lengths from the bar.

From the foregoing description, taken in connection with theaccompanying drawing, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advanclamp engaging rib formed on the upper sideof said table, a work clamping head slidably mounted on the table oversaid slot, means to secure said head in sllding engagement wlth thetable, an operating plate mounted on the by the same is retracted to aninoperative position when released by said clamping lever.

2. A steel-cutting machine comprisinga base, a rotary cutter supportedby said base, a work-holding table, means for securing workpiecesthereon, table-supporting armspivoted to the base and carrying thetable, and an operating arm engaged with one of said supporting arms ata point nearer to its pivot than to its point of connection with thetable.

3. In a machine of the character described, a suitably operated cuttingmember, a standard on which the same is mounted, a workcarrying table,separated, relatively springy arms pivotally connected to the standardand supporting the table in a manner such as to permitrmovement thereoftoward and from the cutting member, and means con-7 nected with one ofsaid the table. f 1

4:. In a machineof the character described, a suitably operated cuttingmember, a standard on which the same is mounted, a workarms' for somoving carrying table, arms pivotally connected to the standard andsupporting the table in a manner such as to permit movement thereoftoward and fromthe cutting member, and means for so moving the table,connected said clamp, and a connection between said cam lever and clampextending below the rib and below the work-supporting surface 15 of thetable.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

ROSTO- ELLSWORTI-I COLTON.

Witnesses:

STEPHEN N. WING, T. W. VETTERLING.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

